ADDING/SUBTRACTING POLYNOMIALS. PLS I NEED HELP!!!! PS. IM SERIOUS?

Please answer these so I can know if my answers are right!!
(^ means it's an exponent)

1. 2x-3(3x^3-5x^2+6x-2)-(7x^2-6x+7)
2. 2x(x^2-5x+3)-3x(2x^2+6x-3)

THANK YOU SO MUCH!!!
3 answers 3